import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 石方旭
 * Date: 2022-09-30
 * Time: 7:37
 */
public class Test {

    public static void main1(String[] args) {
        Scanner scan = new Scanner(System.in);
        int score = scan.nextInt();
        switch (score/10){
            case 10 :
                System.out.println("A");
                break;
            case 9:
                System.out.println("A");
                break;
            case 8:
                System.out.println("B");
                break;
            case 7:
                System.out.println("C");
                break;
            case 6:
                System.out.println("D");
                break;
            default:
                if(score>10||score<0){
                    System.out.println("成绩有误");
                }else {
                    System.out.println("E");
                }
                break;
        }
    }

    public static void main2(String[] args) {
        int n = Integer.parseInt(args[0]);
        for(int i =1;i<=n;++i){
            System.out.print("*");
        }
        System.out.println();
    }

    public static void main4(String[] args) {
        for(int i =1;i<=9;++i){
            for(int j =1;j<=i;++j){
                System.out.print(i*j + "\t");
            }
            System.out.println();
        }
    }


    public static void main5(String[] args) {
        int sum1 = 0;
        for(int i =0;i<=100;i+=2){
            sum1+=i;
        }
        int sum2 =0;
        int i =0;
        while(i<=100){
            sum2+=i;
            i+=2;
        }
        int sum3 = 0;
        int j = 0;
        do{
            sum3+=j;
            j+=2;
        }while (j<=100);
        System.out.println(sum1 + " " + sum2 + " " + sum3);
    }

    public static void main(String[] args) {
        System.out.println("hello,world");
    }



}
